正则表达式逗号分隔 (c++)

#include<regex>
using namespace std;
vector<string > splitString( string str_ )
{
regex pattern( "[\\s,]" );
sregex_token_iterator iter( str_.begin(), str_.end(), pattern, - 1 );
vector<string >strs;
sregex_token_iterator end;
while ( iter!= end )
{
string temp = *iter++;
strs.push_back( temp );
cout << temp << endl;
}
return strs;
}